Re: [Xen-users] CentOS ISO how to boot in Xen guest system

["Alain Barthe" <ab266061@xxxxxxxxx>]

2008/10/13 James Corteciano <linux@xxxxxxxxxxxxxxxxx>

Hi Steffen,

I try to mount the partition in dom0 and however this is what the error message said:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dom0:~# mount -t ext3 /dev/server/centos /mnt/temp
mount: wrong fs type, bad option, bad superblock on /dev/server/centos,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

dom0:  dmesg | tail
...............
VFS: Can't find ext3 filesystem on dev dm-14.
...................
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I have got a wrong entry in /etc/fstab inside the domU system which cause of not booting properly. Is there anyway I can do to mount this /dev/server/centos in dom0?

What you try to mount above is a whole virtual disk. You have first to make its partition seeable from your dom0 by using "kpartx -a /dev/server/centos". This will create for you entries (one per virtual partition) in /dev/mapper. Then you have to mount the entry that corresponds to your virtual root.
 

Thanks!
James

On Sun, Oct 12, 2008 at 7:16 AM, Steffen Heil <lists@xxxxxxxxxxxxxxx> wrote:

Hi

> How to boot the centos dvd image (/download/centos/centos5.2.iso) in xen
guest system to let me do linux rescue command?

You don't have to.
Just mount the partition in dom0 and repair there!

Regards,
 Steffen

--
Linux Registered User #380364

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